efi_loader: avoid EFI_CALL() for clearing screen
Carve out function efi_clear_screen.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
index 3354b21..6d4784e 100644
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -462,6 +462,20 @@
/**
* efi_cout_clear_screen() - clear screen
+ */
+static void efi_clear_screen(void)
+{
+ /*
+ * The Linux console wants both a clear and a home command. The video
+ * uclass does not support <ESC>[H without coordinates, yet.
+ */
+ printf(ESC "[2J" ESC "[1;1H");
+ efi_con_mode.cursor_column = 0;
+ efi_con_mode.cursor_row = 0;
+}
+
+/**
+ * efi_cout_clear_screen() - clear screen
*
* This function implements the ClearScreen service of the simple text output
* protocol. See the Unified Extensible Firmware Interface (UEFI) specification
@@ -475,13 +489,7 @@
{
EFI_ENTRY("%p", this);
- /*
- * The Linux console wants both a clear and a home command. The video
- * uclass does not support <ESC>[H without coordinates, yet.
- */
- printf(ESC "[2J" ESC "[1;1H");
- efi_con_mode.cursor_column = 0;
- efi_con_mode.cursor_row = 0;
+ efi_clear_screen();
return EFI_EXIT(EFI_SUCCESS);
}
@@ -510,7 +518,7 @@
return EFI_EXIT(EFI_UNSUPPORTED);
efi_con_mode.mode = mode_number;
- EFI_CALL(efi_cout_clear_screen(this));
+ efi_clear_screen();
return EFI_EXIT(EFI_SUCCESS);
}
@@ -536,7 +544,7 @@
efi_con_mode.attribute = 0x07;
printf(ESC "[0;37;40m");
/* Clear screen */
- EFI_CALL(efi_cout_clear_screen(this));
+ efi_clear_screen();
return EFI_EXIT(EFI_SUCCESS);
}